172257193 has 2 divisors, whose sum is σ = 172257194. Its totient is φ = 172257192.

The previous prime is 172257191. The next prime is 172257203. The reversal of 172257193 is 391752271.

172257193 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 167003929 + 5253264 = 12923^2 + 2292^2 .

It is a cyclic number.

It is not a de Polignac number, because 172257193 - 2¹ = 172257191 is a prime.

It is a super-3 number, since 3×172257193³ (a number of 26 digits) contains 333 as substring.

Together with 172257191, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (172257191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86128596 + 86128597.

It is an arithmetic number, because the mean of its divisors is an integer number (86128597).

Almost surely, 2^172257193 is an apocalyptic number.

It is an amenable number.

172257193 is a deficient number, since it is larger than the sum of its proper divisors (1).

172257193 is an equidigital number, since it uses as much as digits as its factorization.

172257193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26460, while the sum is 37.

The square root of 172257193 is about 13124.6787770216. The cubic root of 172257193 is about 556.4068337300.

The spelling of 172257193 in words is "one hundred seventy-two million, two hundred fifty-seven thousand, one hundred ninety-three".